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首页> 外文期刊>The mediterranean journal of electronics and communications >EXPERIMENTAL VERIFICATION OF A MULTIPLE SWITCHED BEAM SMART ANTENNA WITH BEAM SHAPING CAPABILITY USING DUAL-POLARIZED SLANT ±45°STACKED PATCH ELEMENTS
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EXPERIMENTAL VERIFICATION OF A MULTIPLE SWITCHED BEAM SMART ANTENNA WITH BEAM SHAPING CAPABILITY USING DUAL-POLARIZED SLANT ±45°STACKED PATCH ELEMENTS

机译：使用±45°倾斜倾斜面的双极化斜面对具有梁成形能力的多开关梁智能天线进行实验验证

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摘要

This work describes the design of a smart antenna system which offers improvements over simple multiple beam antennas by the addition of shaped beams. The shaped beams are designed to provide enhanced coverage over one half of a sector whilst maintaining a good level of service over the remainder of the sector. Such an arrangement helps improve capacity and eliminate "drop-outs". The antenna system has the ability to dynamically optimise a cell sector to relieve congestion at a single hot-spot cell sector of a 3G WCDMA system. The antenna consists of an array of four dual-polarised slant ±45° stacked patch elements, a Butler matrix beam forming network and a beam shaping network with variable phase shifters. Depending on the state of the phase shifters in the beam shaping network seven different shaped beams can be formed. Simulated and measured radiation patterns are presented. The actual complete smart antenna would incorporate vertical array columns ten elements high; but as a feasibility demonstration, only single elements have been used for each column. As such, mutual coupling effects are still present and all azimuth radiation patterns measured are representative of the complete smart antenna.
机译：这项工作描述了智能天线系统的设计，该系统通过添加成形波束来提供对简单多波束天线的改进。异型梁的设计旨在在一个扇区的一半范围内提供更大的覆盖范围，同时在其余扇区中保持良好的服务水平。这种安排有助于提高容量并消除“掉线”。天线系统具有动态优化小区扇区的能力，以缓解3G WCDMA系统单个热点小区扇区的拥塞。该天线由四个双极化倾斜±45°堆叠贴片元件，一个Butler矩阵波束形成网络和一个带可变移相器的波束成形网络组成。根据光束整形网络中移相器的状态，可以形成七个不同形状的光束。给出了模拟和测量的辐射图。实际的完整智能天线将包含十个单元高的垂直阵列列；但是，作为可行性演示，每列仅使用了一个元素。这样，仍然存在相互耦合效应，并且所测量的所有方位辐射图都代表了完整的智能天线。

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